applicom.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:25k
- /* Derived from Applicom driver ac.c for SCO Unix */
- /* Ported by David Woodhouse, Axiom (Cambridge) Ltd. */
- /* dwmw2@redhat.com 30/8/98 */
- /* $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $ */
- /* This module is for Linux 2.1 and 2.2 series kernels. */
- /*****************************************************************************/
- /* J PAGET 18/02/94 passage V2.4.2 ioctl avec code 2 reset to les interrupt */
- /* ceci pour reseter correctement apres une sortie sauvage */
- /* J PAGET 02/05/94 passage V2.4.3 dans le traitement de d'interruption, */
- /* LoopCount n'etait pas initialise a 0. */
- /* F LAFORSE 04/07/95 version V2.6.0 lecture bidon apres acces a une carte */
- /* pour liberer le bus */
- /* J.PAGET 19/11/95 version V2.6.1 Nombre, addresse,irq n'est plus configure */
- /* et passe en argument a acinit, mais est scrute sur le bus pour s'adapter */
- /* au nombre de cartes presentes sur le bus. IOCL code 6 affichait V2.4.3 */
- /* F.LAFORSE 28/11/95 creation de fichiers acXX.o avec les differentes */
- /* adresses de base des cartes, IOCTL 6 plus complet */
- /* J.PAGET le 19/08/96 copie de la version V2.6 en V2.8.0 sans modification */
- /* de code autre que le texte V2.6.1 en V2.8.0 */
- /*****************************************************************************/
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/slab.h>
- #include <asm/errno.h>
- #include <asm/io.h>
- #include <asm/uaccess.h>
- #include <linux/miscdevice.h>
- #include <linux/pci.h>
- #include <linux/wait.h>
- #include <linux/init.h>
- #include <linux/compatmac.h>
- #include "applicom.h"
- #if LINUX_VERSION_CODE < 0x20300
- /* These probably want adding to <linux/compatmac.h> */
- #define init_waitqueue_head(x) do { *(x) = NULL; } while (0);
- #define PCI_BASE_ADDRESS(dev) (dev->base_address[0])
- #define DECLARE_WAIT_QUEUE_HEAD(x) struct wait_queue *x
- #define __setup(x,y) /* */
- #else
- #define PCI_BASE_ADDRESS(dev) (dev->resource[0].start)
- #endif
- /* NOTE: We use for loops with {write,read}b() instead of
- memcpy_{from,to}io throughout this driver. This is because
- the board doesn't correctly handle word accesses - only
- bytes.
- */
- #undef DEBUG
- #define MAX_BOARD 8 /* maximum of pc board possible */
- #define MAX_ISA_BOARD 4
- #define LEN_RAM_IO 0x800
- #define AC_MINOR 157
- #ifndef PCI_VENDOR_ID_APPLICOM
- #define PCI_VENDOR_ID_APPLICOM 0x1389
- #define PCI_DEVICE_ID_APPLICOM_PCIGENERIC 0x0001
- #define PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN 0x0002
- #define PCI_DEVICE_ID_APPLICOM_PCI2000PFB 0x0003
- #endif
- #define MAX_PCI_DEVICE_NUM 3
- static char *applicom_pci_devnames[] = {
- "PCI board",
- "PCI2000IBS / PCI2000CAN",
- "PCI2000PFB"
- };
- static struct pci_device_id applicom_pci_tbl[] = {
- { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCIGENERIC,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000PFB,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { 0 }
- };
- MODULE_DEVICE_TABLE(pci, applicom_pci_tbl);
- MODULE_AUTHOR("David Woodhouse & Applicom International");
- MODULE_DESCRIPTION("Driver for Applicom Profibus card");
- MODULE_LICENSE("GPL");
- MODULE_PARM(irq, "i");
- MODULE_PARM_DESC(irq, "IRQ of the Applicom board");
- MODULE_PARM(mem, "i");
- MODULE_PARM_DESC(mem, "Shared Memory Address of Applicom board");
- MODULE_SUPPORTED_DEVICE("ac");
- static struct applicom_board {
- unsigned long PhysIO;
- unsigned long RamIO;
- wait_queue_head_t FlagSleepSend;
- long irq;
- spinlock_t mutex;
- } apbs[MAX_BOARD];
- static unsigned int irq = 0; /* interrupt number IRQ */
- static unsigned long mem = 0; /* physical segment of board */
- static unsigned int numboards; /* number of installed boards */
- static volatile unsigned char Dummy;
- static DECLARE_WAIT_QUEUE_HEAD(FlagSleepRec);
- static unsigned int WriteErrorCount; /* number of write error */
- static unsigned int ReadErrorCount; /* number of read error */
- static unsigned int DeviceErrorCount; /* number of device error */
- static ssize_t ac_read (struct file *, char *, size_t, loff_t *);
- static ssize_t ac_write (struct file *, const char *, size_t, loff_t *);
- static int ac_ioctl(struct inode *, struct file *, unsigned int,
- unsigned long);
- static void ac_interrupt(int, void *, struct pt_regs *);
- static struct file_operations ac_fops = {
- owner:THIS_MODULE,
- llseek:no_llseek,
- read:ac_read,
- write:ac_write,
- ioctl:ac_ioctl,
- };
- static struct miscdevice ac_miscdev = {
- AC_MINOR,
- "ac",
- &ac_fops
- };
- static int dummy; /* dev_id for request_irq() */
- static int ac_register_board(unsigned long physloc, unsigned long loc,
- unsigned char boardno)
- {
- volatile unsigned char byte_reset_it;
- if((readb(loc + CONF_END_TEST) != 0x00) ||
- (readb(loc + CONF_END_TEST + 1) != 0x55) ||
- (readb(loc + CONF_END_TEST + 2) != 0xAA) ||
- (readb(loc + CONF_END_TEST + 3) != 0xFF))
- return 0;
- if (!boardno)
- boardno = readb(loc + NUMCARD_OWNER_TO_PC);
- if (!boardno && boardno > MAX_BOARD) {
- printk(KERN_WARNING "Board #%d (at 0x%lx) is out of range (1 <= x <= %d).n",
- boardno, physloc, MAX_BOARD);
- return 0;
- }
- if (apbs[boardno - 1].RamIO) {
- printk(KERN_WARNING "Board #%d (at 0x%lx) conflicts with previous board #%d (at 0x%lx)n",
- boardno, physloc, boardno, apbs[boardno-1].PhysIO);
- return 0;
- }
- boardno--;
- apbs[boardno].PhysIO = physloc;
- apbs[boardno].RamIO = loc;
- init_waitqueue_head(&apbs[boardno].FlagSleepSend);
- spin_lock_init(&apbs[boardno].mutex);
- byte_reset_it = readb(loc + RAM_IT_TO_PC);
- numboards++;
- return boardno + 1;
- }
- #ifdef MODULE
- #define applicom_init init_module
- void cleanup_module(void)
- {
- int i;
- misc_deregister(&ac_miscdev);
- for (i = 0; i < MAX_BOARD; i++) {
- if (!apbs[i].RamIO)
- continue;
-
- iounmap((void *) apbs[i].RamIO);
- if (apbs[i].irq)
- free_irq(apbs[i].irq, &dummy);
- }
- }
- #endif /* MODULE */
- int __init applicom_init(void)
- {
- int i, numisa = 0;
- struct pci_dev *dev = NULL;
- void *RamIO;
- int boardno;
- printk(KERN_INFO "Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $n");
- /* No mem and irq given - check for a PCI card */
- while ( (dev = pci_find_class(PCI_CLASS_OTHERS << 16, dev))) {
- if (dev->vendor != PCI_VENDOR_ID_APPLICOM)
- continue;
-
- if (dev->device > MAX_PCI_DEVICE_NUM || dev->device == 0)
- continue;
-
- if (pci_enable_device(dev))
- return -EIO;
- RamIO = ioremap(PCI_BASE_ADDRESS(dev), LEN_RAM_IO);
- if (!RamIO) {
- printk(KERN_INFO "ac.o: Failed to ioremap PCI memory space at 0x%lxn", PCI_BASE_ADDRESS(dev));
- return -EIO;
- }
- printk(KERN_INFO "Applicom %s found at mem 0x%lx, irq %dn",
- applicom_pci_devnames[dev->device-1], PCI_BASE_ADDRESS(dev),
- dev->irq);
- if (!(boardno = ac_register_board(PCI_BASE_ADDRESS(dev),
- (unsigned long)RamIO,0))) {
- printk(KERN_INFO "ac.o: PCI Applicom device doesn't have correct signature.n");
- iounmap(RamIO);
- continue;
- }
- if (request_irq(dev->irq, &ac_interrupt, SA_SHIRQ, "Applicom PCI", &dummy)) {
- printk(KERN_INFO "Could not allocate IRQ %d for PCI Applicom device.n", dev->irq);
- iounmap(RamIO);
- apbs[boardno - 1].RamIO = 0;
- continue;
- }
- /* Enable interrupts. */
- writeb(0x40, apbs[boardno - 1].RamIO + RAM_IT_FROM_PC);
- apbs[boardno - 1].irq = dev->irq;
- }
- /* Finished with PCI cards. If none registered,
- * and there was no mem/irq specified, exit */
- if (!mem || !irq) {
- if (numboards)
- goto fin;
- else {
- printk(KERN_INFO "ac.o: No PCI boards found.n");
- printk(KERN_INFO "ac.o: For an ISA board you must supply memory and irq parameters.n");
- return -ENXIO;
- }
- }
- /* Now try the specified ISA cards */
- #warning "LEAK"
- RamIO = ioremap(mem, LEN_RAM_IO * MAX_ISA_BOARD);
- if (!RamIO)
- printk(KERN_INFO "ac.o: Failed to ioremap ISA memory space at 0x%lxn", mem);
- for (i = 0; i < MAX_ISA_BOARD; i++) {
- RamIO = ioremap(mem + (LEN_RAM_IO * i), LEN_RAM_IO);
- if (!RamIO) {
- printk(KERN_INFO "ac.o: Failed to ioremap the ISA card's memory space (slot #%d)n", i + 1);
- continue;
- }
- if (!(boardno = ac_register_board((unsigned long)mem+ (LEN_RAM_IO*i),
- (unsigned long)RamIO,i+1))) {
- iounmap(RamIO);
- continue;
- }
- printk(KERN_NOTICE "Applicom ISA card found at mem 0x%lx, irq %dn", mem + (LEN_RAM_IO*i), irq);
- if (!numisa) {
- if (request_irq(irq, &ac_interrupt, SA_SHIRQ, "Applicom ISA", &dummy)) {
- printk(KERN_WARNING "Could not allocate IRQ %d for ISA Applicom device.n", irq);
- iounmap((void *) RamIO);
- apbs[boardno - 1].RamIO = 0;
- }
- apbs[boardno - 1].irq = irq;
- }
- else
- apbs[boardno - 1].irq = 0;
- numisa++;
- }
- if (!numisa)
- printk(KERN_WARNING"ac.o: No valid ISA Applicom boards found at mem 0x%lxn",mem);
- fin:
- init_waitqueue_head(&FlagSleepRec);
- WriteErrorCount = 0;
- ReadErrorCount = 0;
- DeviceErrorCount = 0;
- if (numboards) {
- misc_register(&ac_miscdev);
- for (i = 0; i < MAX_BOARD; i++) {
- int serial;
- char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1];
- if (!apbs[i].RamIO)
- continue;
- for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++)
- boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial);
- boardname[serial] = 0;
- printk(KERN_INFO "Applicom board %d: %s, PROM V%d.%d",
- i+1, boardname,
- (int)(readb(apbs[i].RamIO + VERS) >> 4),
- (int)(readb(apbs[i].RamIO + VERS) & 0xF));
-
- serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) +
- (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) +
- (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) );
- if (serial != 0)
- printk(" S/N %dn", serial);
- else
- printk("n");
- }
- return 0;
- }
- else
- return -ENXIO;
- }
- #ifndef MODULE
- __initcall(applicom_init);
- #endif
- static ssize_t ac_write(struct file *file, const char *buf, size_t count, loff_t * ppos)
- {
- unsigned int NumCard; /* Board number 1 -> 8 */
- unsigned int IndexCard; /* Index board number 0 -> 7 */
- unsigned char TicCard; /* Board TIC to send */
- unsigned long flags; /* Current priority */
- struct st_ram_io st_loc;
- struct mailbox tmpmailbox;
- #ifdef DEBUG
- int c;
- #endif
- DECLARE_WAITQUEUE(wait, current);
- if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) {
- static int warncount = 5;
- if (warncount) {
- printk(KERN_INFO "Hmmm. write() of Applicom card, length %d != expected %dn",
- count, sizeof(struct st_ram_io) + sizeof(struct mailbox));
- warncount--;
- }
- return -EINVAL;
- }
- if(copy_from_user(&st_loc, buf, sizeof(struct st_ram_io)))
- return -EFAULT;
-
- if(copy_from_user(&tmpmailbox, &buf[sizeof(struct st_ram_io)],
- sizeof(struct mailbox)))
- return -EFAULT;
- NumCard = st_loc.num_card; /* board number to send */
- TicCard = st_loc.tic_des_from_pc; /* tic number to send */
- IndexCard = NumCard - 1;
- if((NumCard < 1) || (NumCard > MAX_BOARD) || !apbs[IndexCard].RamIO)
- return -EINVAL;
- #ifdef DEBUG
- printk("Write to applicom card #%d. struct st_ram_io follows:",
- IndexCard+1);
- for (c = 0; c < sizeof(struct st_ram_io);) {
-
- printk("n%5.5X: %2.2X", c, ((unsigned char *) &st_loc)[c]);
- for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) {
- printk(" %2.2X", ((unsigned char *) &st_loc)[c]);
- }
- }
- printk("nstruct mailbox follows:");
- for (c = 0; c < sizeof(struct mailbox);) {
- printk("n%5.5X: %2.2X", c, ((unsigned char *) &tmpmailbox)[c]);
- for (c++; c % 8 && c < sizeof(struct mailbox); c++) {
- printk(" %2.2X", ((unsigned char *) &tmpmailbox)[c]);
- }
- }
- printk("n");
- #endif
- spin_lock_irqsave(&apbs[IndexCard].mutex, flags);
- /* Test octet ready correct */
- if(readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) > 2) {
- Dummy = readb(apbs[IndexCard].RamIO + VERS);
- spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
- printk(KERN_WARNING "APPLICOM driver write error board %d, DataFromPcReady = %dn",
- IndexCard,(int)readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY));
- DeviceErrorCount++;
- return -EIO;
- }
-
- /* Place ourselves on the wait queue */
- set_current_state(TASK_INTERRUPTIBLE);
- add_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait);
- /* Check whether the card is ready for us */
- while (readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) != 0) {
- Dummy = readb(apbs[IndexCard].RamIO + VERS);
- /* It's busy. Sleep. */
- spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
- schedule();
- if (signal_pending(current)) {
- remove_wait_queue(&apbs[IndexCard].FlagSleepSend,
- &wait);
- return -EINTR;
- }
- spin_lock_irqsave(&apbs[IndexCard].mutex, flags);
- set_current_state(TASK_INTERRUPTIBLE);
- }
- /* We may not have actually slept */
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait);
- writeb(1, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
- /* Which is best - lock down the pages with rawio and then
- copy directly, or use bounce buffers? For now we do the latter
- because it works with 2.2 still */
- {
- unsigned char *from = (unsigned char *) &tmpmailbox;
- unsigned long to = (unsigned long) apbs[IndexCard].RamIO + RAM_FROM_PC;
- int c;
- for (c = 0; c < sizeof(struct mailbox); c++)
- writeb(*(from++), to++);
- }
- writeb(0x20, apbs[IndexCard].RamIO + TIC_OWNER_FROM_PC);
- writeb(0xff, apbs[IndexCard].RamIO + NUMCARD_OWNER_FROM_PC);
- writeb(TicCard, apbs[IndexCard].RamIO + TIC_DES_FROM_PC);
- writeb(NumCard, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC);
- writeb(2, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
- writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
- Dummy = readb(apbs[IndexCard].RamIO + VERS);
- spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags);
- return 0;
- }
- static int do_ac_read(int IndexCard, char *buf)
- {
- struct st_ram_io st_loc;
- struct mailbox tmpmailbox; /* bounce buffer - can't copy to user space with cli() */
- unsigned long from = (unsigned long)apbs[IndexCard].RamIO + RAM_TO_PC;
- unsigned char *to = (unsigned char *)&tmpmailbox;
- #ifdef DEBUG
- int c;
- #endif
- st_loc.tic_owner_to_pc = readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC);
- st_loc.numcard_owner_to_pc = readb(apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC);
- {
- int c;
- for (c = 0; c < sizeof(struct mailbox); c++)
- *(to++) = readb(from++);
- }
- writeb(1, apbs[IndexCard].RamIO + ACK_FROM_PC_READY);
- writeb(1, apbs[IndexCard].RamIO + TYP_ACK_FROM_PC);
- writeb(IndexCard+1, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC);
- writeb(readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC),
- apbs[IndexCard].RamIO + TIC_ACK_FROM_PC);
- writeb(2, apbs[IndexCard].RamIO + ACK_FROM_PC_READY);
- writeb(0, apbs[IndexCard].RamIO + DATA_TO_PC_READY);
- writeb(2, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
- Dummy = readb(apbs[IndexCard].RamIO + VERS);
- #ifdef DEBUG
- printk("Read from applicom card #%d. struct st_ram_io follows:", NumCard);
- for (c = 0; c < sizeof(struct st_ram_io);) {
- printk("n%5.5X: %2.2X", c, ((unsigned char *) &st_loc)[c]);
- for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) {
- printk(" %2.2X", ((unsigned char *) &st_loc)[c]);
- }
- }
- printk("nstruct mailbox follows:");
- for (c = 0; c < sizeof(struct mailbox);) {
- printk("n%5.5X: %2.2X", c, ((unsigned char *) &tmpmailbox)[c]);
- for (c++; c % 8 && c < sizeof(struct mailbox); c++) {
- printk(" %2.2X", ((unsigned char *) &tmpmailbox)[c]);
- }
- }
- printk("n");
- #endif
- #warning "Je suis stupide. DW. - copy*user in cli"
- if (copy_to_user(buf, &st_loc, sizeof(struct st_ram_io)))
- return -EFAULT;
- if (copy_to_user(&buf[sizeof(struct st_ram_io)], &tmpmailbox, sizeof(struct mailbox)))
- return -EFAULT;
- return (sizeof(struct st_ram_io) + sizeof(struct mailbox));
- }
- static ssize_t ac_read (struct file *filp, char *buf, size_t count, loff_t *ptr)
- {
- unsigned long flags;
- unsigned int i;
- unsigned char tmp;
- int ret = 0;
- DECLARE_WAITQUEUE(wait, current);
- #ifdef DEBUG
- int loopcount=0;
- #endif
- /* No need to ratelimit this. Only root can trigger it anyway */
- if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) {
- printk( KERN_WARNING "Hmmm. read() of Applicom card, length %d != expected %dn",
- count,sizeof(struct st_ram_io) + sizeof(struct mailbox));
- return -EINVAL;
- }
-
- while(1) {
- /* Stick ourself on the wait queue */
- set_current_state(TASK_INTERRUPTIBLE);
- add_wait_queue(&FlagSleepRec, &wait);
-
- /* Scan each board, looking for one which has a packet for us */
- for (i=0; i < MAX_BOARD; i++) {
- if (!apbs[i].RamIO)
- continue;
- spin_lock_irqsave(&apbs[i].mutex, flags);
-
- tmp = readb(apbs[i].RamIO + DATA_TO_PC_READY);
-
- if (tmp == 2) {
- /* Got a packet for us */
- ret = do_ac_read(i, buf);
- spin_unlock_irqrestore(&apbs[i].mutex, flags);
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&FlagSleepRec, &wait);
- return tmp;
- }
-
- if (tmp > 2) {
- /* Got an error */
- Dummy = readb(apbs[i].RamIO + VERS);
-
- spin_unlock_irqrestore(&apbs[i].mutex, flags);
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&FlagSleepRec, &wait);
-
- printk(KERN_WARNING "APPLICOM driver read error board %d, DataToPcReady = %dn",
- i,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY));
- DeviceErrorCount++;
- return -EIO;
- }
-
- /* Nothing for us. Try the next board */
- Dummy = readb(apbs[i].RamIO + VERS);
- spin_unlock_irqrestore(&apbs[i].mutex, flags);
-
- } /* per board */
- /* OK - No boards had data for us. Sleep now */
- schedule();
- remove_wait_queue(&FlagSleepRec, &wait);
- if (signal_pending(current))
- return -EINTR;
- #ifdef DEBUG
- if (loopcount++ > 2) {
- printk("Looping in ac_read. loopcount %dn", loopcount);
- }
- #endif
- }
- }
- static void ac_interrupt(int vec, void *dev_instance, struct pt_regs *regs)
- {
- unsigned int i;
- unsigned int FlagInt;
- unsigned int LoopCount;
- // printk("Applicom interrupt on IRQ %d occurredn", vec);
- LoopCount = 0;
- do {
- FlagInt = 0;
- for (i = 0; i < MAX_BOARD; i++) {
-
- /* Skip if this board doesn't exist */
- if (!apbs[i].RamIO)
- continue;
- spin_lock(&apbs[i].mutex);
- /* Skip if this board doesn't want attention */
- if(readb(apbs[i].RamIO + RAM_IT_TO_PC) == 0) {
- spin_unlock(&apbs[i].mutex);
- continue;
- }
- FlagInt = 1;
- writeb(0, apbs[i].RamIO + RAM_IT_TO_PC);
- if (readb(apbs[i].RamIO + DATA_TO_PC_READY) > 2) {
- printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataToPcReady = %dn",
- i+1,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY));
- DeviceErrorCount++;
- }
- if((readb(apbs[i].RamIO + DATA_FROM_PC_READY) > 2) &&
- (readb(apbs[i].RamIO + DATA_FROM_PC_READY) != 6)) {
-
- printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataFromPcReady = %dn",
- i+1,(int)readb(apbs[i].RamIO + DATA_FROM_PC_READY));
- DeviceErrorCount++;
- }
- if (readb(apbs[i].RamIO + DATA_TO_PC_READY) == 2) { /* mailbox sent by the card ? */
- if (waitqueue_active(&FlagSleepRec)) {
- wake_up_interruptible(&FlagSleepRec);
- }
- }
- if (readb(apbs[i].RamIO + DATA_FROM_PC_READY) == 0) { /* ram i/o free for write by pc ? */
- if (waitqueue_active(&apbs[i].FlagSleepSend)) { /* process sleep during read ? */
- wake_up_interruptible(&apbs[i].FlagSleepSend);
- }
- }
- Dummy = readb(apbs[i].RamIO + VERS);
- if(readb(apbs[i].RamIO + RAM_IT_TO_PC)) {
- /* There's another int waiting on this card */
- spin_unlock(&apbs[i].mutex);
- i--;
- } else {
- spin_unlock(&apbs[i].mutex);
- }
- }
- if (FlagInt)
- LoopCount = 0;
- else
- LoopCount++;
- } while(LoopCount < 2);
- }
- static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
-
- { /* @ ADG ou ATO selon le cas */
- int i;
- unsigned char IndexCard;
- unsigned long pmem;
- int ret = 0;
- volatile unsigned char byte_reset_it;
- struct st_ram_io *adgl;
- /* In general, the device is only openable by root anyway, so we're not
- particularly concerned that bogus ioctls can flood the console. */
- adgl = kmalloc(sizeof(struct st_ram_io), GFP_KERNEL);
- if (!adgl)
- return -ENOMEM;
- if (copy_from_user(adgl, (void *)arg,sizeof(struct st_ram_io))) {
- kfree(adgl);
- return -EFAULT;
- }
-
- IndexCard = adgl->num_card-1;
-
- if(cmd != 0 && cmd != 6 &&
- ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) {
- static int warncount = 10;
- if (warncount) {
- printk( KERN_WARNING "APPLICOM driver IOCTL, bad board number %dn",(int)IndexCard+1);
- warncount--;
- }
- kfree(adgl);
- return -EINVAL;
- }
- switch (cmd) {
-
- case 0:
- pmem = apbs[IndexCard].RamIO;
- for (i = 0; i < sizeof(struct st_ram_io); i++)
- ((unsigned char *)adgl)[i]=readb(pmem++);
- if (copy_to_user((void *)arg, adgl, sizeof(struct st_ram_io)))
- ret = -EFAULT;
- break;
- case 1:
- pmem = apbs[IndexCard].RamIO + CONF_END_TEST;
- for (i = 0; i < 4; i++)
- adgl->conf_end_test[i] = readb(pmem++);
- for (i = 0; i < 2; i++)
- adgl->error_code[i] = readb(pmem++);
- for (i = 0; i < 4; i++)
- adgl->parameter_error[i] = readb(pmem++);
- pmem = apbs[IndexCard].RamIO + VERS;
- adgl->vers = readb(pmem);
- pmem = apbs[IndexCard].RamIO + TYPE_CARD;
- for (i = 0; i < 20; i++)
- adgl->reserv1[i] = readb(pmem++);
- *(int *)&adgl->reserv1[20] =
- (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER) << 16) +
- (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 1) << 8) +
- (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 2) );
- if (copy_to_user((void *)arg, adgl, sizeof(struct st_ram_io)))
- ret = -EFAULT;
- break;
- case 2:
- pmem = apbs[IndexCard].RamIO + CONF_END_TEST;
- for (i = 0; i < 10; i++)
- writeb(0xff, pmem++);
- writeb(adgl->data_from_pc_ready,
- apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
- writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
-
- for (i = 0; i < MAX_BOARD; i++) {
- if (apbs[i].RamIO) {
- byte_reset_it = readb(apbs[i].RamIO + RAM_IT_TO_PC);
- }
- }
- break;
- case 3:
- pmem = apbs[IndexCard].RamIO + TIC_DES_FROM_PC;
- writeb(adgl->tic_des_from_pc, pmem);
- break;
- case 4:
- pmem = apbs[IndexCard].RamIO + TIC_OWNER_TO_PC;
- adgl->tic_owner_to_pc = readb(pmem++);
- adgl->numcard_owner_to_pc = readb(pmem);
- if (copy_to_user((void *)arg, adgl,sizeof(struct st_ram_io)))
- ret = -EFAULT;
- break;
- case 5:
- writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC);
- writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC);
- writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC);
- writeb(4, apbs[IndexCard].RamIO + DATA_FROM_PC_READY);
- writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC);
- break;
- case 6:
- printk(KERN_INFO "APPLICOM driver release .... V2.8.0 ($Revision: 1.30 $)n");
- printk(KERN_INFO "Number of installed boards . %dn", (int) numboards);
- printk(KERN_INFO "Segment of board ........... %Xn", (int) mem);
- printk(KERN_INFO "Interrupt IRQ number ....... %dn", (int) irq);
- for (i = 0; i < MAX_BOARD; i++) {
- int serial;
- char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1];
- if (!apbs[i].RamIO)
- continue;
- for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++)
- boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial);
- boardname[serial] = 0;
- printk(KERN_INFO "Prom version board %d ....... V%d.%d %s",
- i+1,
- (int)(readb(apbs[IndexCard].RamIO + VERS) >> 4),
- (int)(readb(apbs[IndexCard].RamIO + VERS) & 0xF),
- boardname);
- serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) +
- (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) +
- (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) );
- if (serial != 0)
- printk(" S/N %dn", serial);
- else
- printk("n");
- }
- if (DeviceErrorCount != 0)
- printk(KERN_INFO "DeviceErrorCount ........... %dn", DeviceErrorCount);
- if (ReadErrorCount != 0)
- printk(KERN_INFO "ReadErrorCount ............. %dn", ReadErrorCount);
- if (WriteErrorCount != 0)
- printk(KERN_INFO "WriteErrorCount ............ %dn", WriteErrorCount);
- if (waitqueue_active(&FlagSleepRec))
- printk(KERN_INFO "Process in read pendingn");
- for (i = 0; i < MAX_BOARD; i++) {
- if (apbs[i].RamIO && waitqueue_active(&apbs[i].FlagSleepSend))
- printk(KERN_INFO "Process in write pending board %dn",i+1);
- }
- break;
- default:
- printk(KERN_INFO "APPLICOM driver ioctl, unknown function code %dn",cmd) ;
- ret = -EINVAL;
- break;
- }
- Dummy = readb(apbs[IndexCard].RamIO + VERS);
- kfree(adgl);
- return 0;
- }
- #ifndef MODULE
- static int __init applicom_setup(char *str)
- {
- int ints[4];
- (void) get_options(str, 4, ints);
- if (ints[0] > 2) {
- printk(KERN_WARNING "Too many arguments to 'applicom=', expected mem,irq only.n");
- }
- if (ints[0] < 2) {
- printk(KERN_INFO"applicom numargs: %dn", ints[0]);
- return 0;
- }
- mem = ints[1];
- irq = ints[2];
- return 1;
- }
- __setup("applicom=", applicom_setup);
- #endif /* MODULE */